US9915027B2ActiveUtilityA1

Core-free thermoplastic polyurethane yarn formed with resin and method for producing same

Assignee: PARK HEEDAEPriority: Jun 23, 2016Filed: Nov 10, 2016Granted: Mar 13, 2018

Est. expiryJun 23, 2036(~9.9 yrs left)· nominal 20-yr term from priority

D06M 15/564C08K 3/36C08J 2375/04C08J 3/22D01F 1/10D01F 6/70B82Y 30/00B29C 48/05B29K 2075/00B29K 2105/162C08K 2201/005B29C 48/022C08K 2201/011B29K 2509/08

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Claims

Abstract

The present invention relates to a resin for a thermoplastic polyurethane yarn, comprising: thermoplastic polyurethane; and silica nanopowder. The present invention also relates to a method for producing a thermoplastic polymer yarn having a thickness of 50 denier or less by use of silica nanopowder having a particle size of 5-30 nm as a thickener. The thermoplastic polyurethane resin according to the present invention has desired processability and physical properties.

Claims

exact text as granted — not AI-modified

What is claimed is: 
     
       1. A core-free thermoplastic polyurethane yarn formed with a resin, wherein the resin comprises thermoplastic polyurethane as a base polymer of the core-free thermoplastic polyurethane yarn, and silica nanopowder mixed to the thermoplastic polyurethane by melt extrusion, wherein the silica nanopowder has a particle size of 5 to 30 nm, wherein the core-free thermoplastic polyurethane yarn has a thickness of 50 denier or less. 
     
     
       2. The core-free thermoplastic polyurethane yarn of  claim 1 , wherein the resin is formed in pellets.

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